Finding the Fourth Proportional to 2,029.68, 3,042.72 and 989.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,029.68 : 3,042.72 = 989.10 : x
2. Step 2: Convert to fraction form
   2,029.68/3,042.72 = 989.10/x
3. Step 3: Cross multiply
   2,029.68x = 3,042.72 × 989.10
4. Step 4: Simplify right side
   2,029.68x = 3,009,554.35
5. Step 5: Solve for x
   x = 3,009,554.35/2,029.68
6. Step 6: Final answer
   x = 1,482.77